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/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* Portions Copyright (c) 1993 Carlos Leandro and Rui Salgueiro
* Dep. Matematica Universidade de Coimbra, Portugal, Europe
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* from getnetent.c 1.1 (Coimbra) 93/06/02
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)getnetent.c 8.1 (Berkeley) 6/4/93";
static char rcsid[] = "$Id$";
#endif /* LIBC_SCCS and not lint */
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <arpa/nameser.h>
#include <stdio.h>
#include <resolv.h>
#include <netdb.h>
#include <string.h>
#ifndef _PATH_NETWORKS
#define _PATH_NETWORKS "/etc/networks"
#endif
#define MAXALIASES 35
static FILE *netf;
static char line[BUFSIZ+1];
static struct netent net;
static char *net_aliases[MAXALIASES];
int _net_stayopen;
void _setnetent __P((int));
void _endnetent __P((void));
void
setnetent(stayopen)
int stayopen;
{
sethostent(stayopen);
_setnetent(stayopen);
}
void
endnetent()
{
endhostent();
_endnetent();
}
void
_setnetent(f)
int f;
{
if (netf == NULL)
netf = fopen(_PATH_NETWORKS, "r" );
else
rewind(netf);
_net_stayopen |= f;
}
void
_endnetent()
{
if (netf) {
fclose(netf);
netf = NULL;
}
_net_stayopen = 0;
}
struct netent *
getnetent()
{
char *p;
register char *cp, **q;
if (netf == NULL && (netf = fopen(_PATH_NETWORKS, "r" )) == NULL)
return (NULL);
again:
p = fgets(line, BUFSIZ, netf);
if (p == NULL)
return (NULL);
if (*p == '#')
goto again;
cp = strpbrk(p, "#\n");
if (cp == NULL)
goto again;
*cp = '\0';
net.n_name = p;
cp = strpbrk(p, " \t");
if (cp == NULL)
goto again;
*cp++ = '\0';
while (*cp == ' ' || *cp == '\t')
cp++;
p = strpbrk(cp, " \t");
if (p != NULL)
*p++ = '\0';
net.n_net = inet_network(cp);
net.n_addrtype = AF_INET;
q = net.n_aliases = net_aliases;
if (p != NULL)
cp = p;
while (cp && *cp) {
if (*cp == ' ' || *cp == '\t') {
cp++;
continue;
}
if (q < &net_aliases[MAXALIASES - 1])
*q++ = cp;
cp = strpbrk(cp, " \t");
if (cp != NULL)
*cp++ = '\0';
}
*q = NULL;
return (&net);
}
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